Why do solids have different densities

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: